Question

Metaculus Help: Spread the word

If you like Metaculus, tell your friends! Share this question via Facebook, Twitter, or Reddit.

Date life expectancy hits escape velocity

Related questions on Metaculus:

Wikipedia: Longevity escape velocity --

In the life extension movement, longevity escape velocity (LEV) or actuarial escape velocity[2] is a hypothetical situation in which life expectancy is extended longer than the time that is passing. For example, in a given year in which longevity escape velocity would be maintained, technological advances would increase life expectancy more than the year that just went by.

For many years in the past, life expectancy at each age has increased slightly every year as treatment strategies and technologies have improved. At present, more than one year of research is required for each additional year of expected life. Longevity escape velocity occurs when this ratio reverses, so that life expectancy increases faster than one year per one year of research, as long as that rate of advance is sustainable.

When will a country reach longevity escape velocity, i.e. sustained increase of life expectancy of at least 1?

This question resolves when average life expectancy at 10-years old sees a continuous increase of at least 1 year per year over a 5-year period.

  • Sustainable longevity escape velocity is reached when a country obtains an increased life expectancy averaging at least 1 over a 5 year period. The resolved year is the first year that begins this trend (i.e., if the years X to (X+4) average to ≥1 life expectancy gain per year, then this resolves as X).

  • Positive resolution requires that the average life expectancy at 10-years old exceeds 85.0 years over the 5-year period. Moreover, the country must have at least 1M citizens during this period.

  • Positive resolution requires that the life expectancy in each of the years over the 5-year period exceeds the recorded all-time maximum. This requirement eliminates the chance of spurious resolutions stemming from a recovery of a disruptive drop in lifespans.

If it is unclear what particular month-day the question should resolve, it resolves as Jan 1st of the relevant year.

{{qctrl.predictionString()}}

Metaculus help: Predicting

Predictions are the heart of Metaculus. Predicting is how you contribute to the wisdom of the crowd, and how you earn points and build up your personal Metaculus track record.

The basics of predicting are very simple: move the slider to best match the likelihood of the outcome, and click predict. You can predict as often as you want, and you're encouraged to change your mind when new information becomes available.

The displayed score is split into current points and total points. Current points show how much your prediction is worth now, whereas total points show the combined worth of all of your predictions over the lifetime of the question. The scoring details are available on the FAQ.

Note: this question resolved before its original close time. All of your predictions came after the resolution, so you did not gain (or lose) any points for it.

Note: this question resolved before its original close time. You earned points up until the question resolution, but not afterwards.

This question is not yet open for predictions.

Thanks for predicting!

Your prediction has been recorded anonymously.

Want to track your predictions, earn points, and hone your forecasting skills? Create an account today!

Track your predictions
Continue exploring the site

Community Stats

Metaculus help: Community Stats

Use the community stats to get a better sense of the community consensus (or lack thereof) for this question. Sometimes people have wildly different ideas about the likely outcomes, and sometimes people are in close agreement. There are even times when the community seems very certain of uncertainty, like when everyone agrees that event is only 50% likely to happen.

When you make a prediction, check the community stats to see where you land. If your prediction is an outlier, might there be something you're overlooking that others have seen? Or do you have special insight that others are lacking? Either way, it might be a good idea to join the discussion in the comments.